Piano hammer



(Model.)

E. ROW.

.PIANO HAMMER. y No. 250,583. Patentedneo. 6,1881.

Attorneys N. PETERS, PhaIu-Umngnphor, Washlngnon, D. C.

UNITED STATES PATENT OFFICE.

EDWARD BOW, OF INDIANA, PENNSYLVANIA.

PIANO-HAMMER.

SPECIFICATION forming part of Letters Patent No. 250,583, dated December 6, 1881.

Application led September 29, 1881. (Model.)

To all lwhom it may concern Be it known that I, EDWARD ROW, a citizen of the United States, resident of Indiana, in the county ot' Indiana, and State of Pennsylvania, have invented a new and valuable Improvement in Piano-Hammers; and I do hereby declare that thefollowin g is afull, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings, making a part of this speciication, and to the letters and gures of reference marked thereon.

Figure l of the drawings is a representation of a side elevation ofthe piano-hammer. Fig. 2 is a plan of the same. Fig. 3 is a cross-section, and Fig. 4 is a view otl the core and its covering removed from the arm.

This invention has relation to piano-hammers; and it consists in the novel construction and arrangement of a gron'ed hollow core, the grooves being in opposite faces of the core and intersecting at right angles the encircling covering, and the bifurcated arm having tongued tines to tit the grooves of the core, as will be hereinafter fully described, and pointed out in the claim.

Referring by letter to the accompanying drawings, A designates the core of wood, bored at B to render it lighter. This core A is provided with intersecting dovetailed grooves C G' C2 C3 in its faces, as shown, for the reception ofthe shouldered, tongued, or bevel-edged tines a of the bfurcated lever D. The wooden core A is covered with suitable material, E, as shown.

By this construction four points ot' contact 'or the hammer are furnished by removing the 'hammer from its bifurcaterl handle and turning and replacing it.

When the covering is worn out it may be replaced by new material.

The hanlmerstrikes two wires, and alter some considerable usage two indentations are made in the covering, and in the ordinary hammer the cover must be removed and replaced in a short tlme.

By the construction herein shown and described four points of contact may be presented before it will become necessary to re-cover the core ofthe hammer, thereby rendering the hammer quite inexpensive.

An adjustable pianohammer is old, and is not broadly claimed hereinafter.

Having thus fully described my invention. what I claim as new, and desire to secure by Letters Patent, is-

In a piano-hammer, the woodencore having dovetailed intersecting grooves in ilsfaces. in combination with a shouldered bifurcated arm haviugbevel-edged tines to tit the grooves, substantially as and lor the purposes specified.

In testimony that I claim the above l have hereunto subscribed my name in the presence ofthe two witnesses.

ED WARD BOV.

Witnesses:

J. A. C. RUFFNER, EDWARD P. HALL. 

